Mineral-oil composition



Patented Dec; 9, 1930- UNITED STATES PAT'ENT. OFFICE CHARLES E. KAEGEBEHN, OF HOZBOKEN, NEW JERSEY, ASSIGN OR TO R. '1. VANDER- IBILT 00., INC., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK MINE AL-Orr oomrosnrron No Drawing.

' eral origin, and relates more particularly to A few te'nths diphenyl may likewise be used to stabilize a highly refined cylinder oil.

the stabilization of lubricating oils, transformer oils and oils employed for the saturation of cables which are liable to become oxidized or decomposed under the influence of light and air or udder high temperatures or when subjected to electrical stresses. 7

According to the present invention, there is incorporated with the mineral oils, a small amount of a stabilizing material which imparts thereto an increased stability and resistance to oxidation and decomposition. The stabilizin agents which are added to the oils accor ing to the present invention,

are aryl phenols, such as the hydroxydiphenyls, more particularly Q-hydrozrydiphen l and 4-hydroxy-diphenyl. -A mixture 0 such compounds may be employed.

CIHB

2-hydroxy-dlphenyl 4-hydroxy-di1ihenyl The stabilizing ingredient or ingredients may be added to the mineral oils directly or in solution in a suitable solvent, such as alcohol or benzol. The' solution of the stabilizer may be readily incorporated in the mineral oil and the solvent may thereafter be vola-v tilized from the mineral oil by steam-distillation or other heating.

A small amount of thestabilizing material will give satisfactory reslllts. In general, a fraction of a percent such as'twotenths to five-tenths of a percent shouldsufmay be stabilized by incorporating therein a few tenths of a'percent of 2-hydroxy-diphenyl. Z

of a percent of -hydroxy- Application filed January 31, 1929. Serial No. 336,656.

claims the expression mineral oil is used to include greases and mineral oil compositions. The term hydroXy-diphenyl is employed generically to include derivates thereof. a

I claim:

1. A mineral oil composition comprising in addition to the 'oil a fraction of a percent of a hydroxy-diphenyL- 2. A mineral oil composition comprising in addition to the oil a fraction of a percent of -2-hydroXy-diphenyl.

- 3. Highly refined cylinder oil having a fraction of a percent of ahydroxy-diphenyl incorporated therein.

4. Transformer oil of mineral origin having a fraction of a percent of a hydroxydiphenyl incorporated therein.

5. A mineral oil suitable for saturating cable wrappings having a fraction of a percent of a hydroxy-diphenyl incorporated therein. v

6. A mineral oil composition comprising in addition to the oil a fraction of a percent of 4-hydroxy-diphenyl. 1

In testimony whereof I afiix m signature.

CHARLES F. KAEG%BEHN.

It is to be understood that throughout the 

